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physics.optics2025
Polarization- and wave-vector selective optical metasurface with near-field coupling
Helene Wetter, Jan Wingenbach, Falk Rehberg +3
Metasurfaces are a powerful tool for manipulating light using small structures on the nanoscale. In most meta-surfaces, near-field couplings are treated as unfavorable perturbation…
physics.optics2025
Universal Topology of Exceptional Points in Nonlinear Non-Hermitian Systems
N. H. Kwong, Jan Wingenbach, Laura Ares +4
Exceptional points (EPs) are non-Hermitian degeneracies where eigenvalues and eigenvectors coalesce, giving rise to unusual physical effects across scientific disciplines. The conc…